~_plots.pdf File
A ~_plots.pdf file is one of two files (the other is a ~.comcat file) created when the ccat command has been used to create output files for importation to the GCCEL database. The two output files are stored in a subdirectory of the cluster series directory named ~_comcat. See the Mangyshlak cluster for an example.
The ~_plots.pdf file is a single PDF file containing multiple plots, all plots that were created in the run, either by default or by the action of the various commands that create plots.